完成基本框架搭建及系统用户登录流程

internal/repository/system/user_repo.go

@@ -0,0 +1,42 @@
+package system
+
+import (
+	"gorm.io/gorm"
+
+	systemmodel "gin-admin/internal/model/system"
+)
+
+// @Author: yv1ing
+// @Author: me@yvling.cn
+// @Date: 2025/8/28 16:33
+// @Desc: 系统用户数据库操作实现
+
+func CreateUser(db *gorm.DB, user *systemmodel.User) error {
+	return db.Create(user).Error
+}
+
+func DeleteUser(db *gorm.DB, id uint) error {
+	return db.Delete(&systemmodel.User{}, id).Error
+}
+
+func UpdateUser(db *gorm.DB, user *systemmodel.User) error {
+	return db.Save(user).Error
+}
+
+func GetUserByID(db *gorm.DB, id uint) (*systemmodel.User, error) {
+	var user systemmodel.User
+	err := db.First(&user, id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+func GetUserByUsername(db *gorm.DB, username string) (*systemmodel.User, error) {
+	var user systemmodel.User
+	err := db.Where("username = ?", username).First(&user).Error
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}